+ The `add_item` command adds items to a location of type `Shop`
+ `selling` allows items to be queried
+ Items are not sorted yet
+ The user will be able to apply optional sorting params
+ Allowed the `insert` function of the DB to be used to update a model already in the DB
+ Clippy + Fmt
+ Implemented register, find, and add_location
+ Bunch of changes to the DB and the Models to make this work
+ API models are defined in GeoffreyModels so things that call the API don't need to define their own types
+ Still needs a lot of work, and need to design the api a bit more
+ Clippy + fmt
+ Each location type is now a struct containing LocationData and location specific data.
+ Each type has its own place its own tree
+ Both were done in order to allow clear deserialization
Joey Hines